Implemented external processes as potential plugins.

Cargo.lock

@@ -2130,6 +2130,7 @@ name = "robotnik"
 version = "0.1.0"
 dependencies = [
  "better-panic",
+ "bytes",
  "cargo-husky",
  "clap",
  "color-eyre",
@@ -2494,6 +2495,15 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "signal-hook-registry"
+version = "1.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2a4719bff48cee6b39d12c020eeb490953ad2443b7055bd0b21fca26bd8c28b"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.11"
@@ -2702,6 +2712,7 @@ dependencies = [
  "libc",
  "mio",
  "pin-project-lite",
+ "signal-hook-registry",
  "socket2",
  "tokio-macros",
  "windows-sys 0.61.2",

Cargo.toml

@@ -5,6 +5,7 @@ edition = "2024"
 
 [dependencies]
 better-panic = "0.3.0"
+bytes = "1"
 color-eyre = "0.6.3"
 directories = "6.0"
 futures = "0.3"
@@ -33,7 +34,15 @@ tracing-subscriber = "0.3"
 
 [dependencies.tokio]
 version = "1"
-  features = [ "io-util", "macros", "net", "rt-multi-thread", "sync" ]
+features = [
+  "io-util",
+  "macros",
+  "net",
+  "process",
+  "rt-multi-thread",
+  "sync",
+  "time",
+]
 
 [dev-dependencies]
 rstest = "0.24"
@@ -41,10 +50,7 @@ tempfile = "3.13"
 
 [dev-dependencies.cargo-husky]
 version = "1"
-  features = [
+features = ["run-cargo-check", "run-cargo-clippy"]
-  "run-cargo-check",
-  "run-cargo-clippy",
-]
 
 [profile.release]
 strip = true

src/command.rs

@@ -0,0 +1,183 @@
+// Commands that are associated with external processes (commands).
+
+use std::{
+    path::{Path, PathBuf},
+    time::Duration,
+};
+
+use bytes::Bytes;
+use color_eyre::{Result, eyre::eyre};
+use tokio::{fs::try_exists, process::Command, time::timeout};
+use tracing::{Level, event};
+
+#[derive(Debug)]
+pub struct CommandDir {
+    command_path: PathBuf,
+}
+
+impl CommandDir {
+    pub fn new(command_path: impl AsRef<Path>) -> Self {
+        event!(
+            Level::INFO,
+            "CommandDir initialized with path: {:?}",
+            command_path.as_ref()
+        );
+        CommandDir {
+            command_path: command_path.as_ref().to_path_buf(),
+        }
+    }
+
+    async fn find_command(&self, name: impl AsRef<Path>) -> Result<String> {
+        let path = self.command_path.join(name.as_ref());
+
+        event!(
+            Level::INFO,
+            "Looking for {} command.",
+            name.as_ref().display()
+        );
+
+        match try_exists(&path).await {
+            Ok(true) => Ok(path.to_string_lossy().to_string()),
+            Ok(false) => Err(eyre!(format!("{} Not found.", path.to_string_lossy()))),
+            Err(e) => Err(e.into()),
+        }
+    }
+
+    pub async fn run_command(
+        &self,
+        command_name: impl AsRef<str>,
+        input: impl AsRef<str>,
+    ) -> Result<Bytes> {
+        let path = self.find_command(Path::new(command_name.as_ref())).await?;
+        // Well it exists let's cross our fingers...
+        let output = Command::new(path).arg(input.as_ref()).output().await?;
+
+        if output.status.success() {
+            // So far so good
+            Ok(Bytes::from(output.stdout))
+        } else {
+            // Whoops
+            Err(eyre!(format!(
+                "Error running {}: {}",
+                command_name.as_ref(),
+                output.status
+            )))
+        }
+    }
+
+    pub async fn run_command_with_timeout(
+        &self,
+        command_name: impl AsRef<str>,
+        input: impl AsRef<str>,
+        time_out: Duration,
+    ) -> Result<Bytes> {
+        timeout(time_out, self.run_command(command_name, input)).await?
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::{
+        fs::{self, Permissions},
+        os::unix::fs::PermissionsExt,
+    };
+    use tempfile::TempDir;
+
+    fn create_test_script(dir: &Path, name: &str, script: &str) -> PathBuf {
+        let path = dir.join(name);
+        fs::write(&path, script).unwrap();
+        fs::set_permissions(&path, Permissions::from_mode(0o755)).unwrap();
+        path
+    }
+
+    #[test]
+    fn test_command_dir_new() {
+        let dir = CommandDir::new("/some/path");
+        assert_eq!(dir.command_path, PathBuf::from("/some/path"));
+    }
+
+    #[tokio::test]
+    async fn test_find_command_exists() {
+        let temp = TempDir::new().unwrap();
+        create_test_script(temp.path(), "test_cmd", "#!/bin/bash\necho hello");
+
+        let cmd_dir = CommandDir::new(temp.path());
+        let result = cmd_dir.find_command("test_cmd").await;
+
+        assert!(result.is_ok());
+        assert!(result.unwrap().contains("test_cmd"));
+    }
+
+    #[tokio::test]
+    async fn test_find_command_not_found() {
+        let temp = TempDir::new().unwrap();
+        let cmd_dir = CommandDir::new(temp.path());
+
+        let result = cmd_dir.find_command("nonexistent").await;
+
+        assert!(result.is_err());
+        assert!(result.unwrap_err().to_string().contains("Not found"));
+    }
+
+    #[tokio::test]
+    async fn test_run_command_success() {
+        let temp = TempDir::new().unwrap();
+        create_test_script(temp.path(), "echo_cmd", "#!/bin/bash\necho \"$1\"");
+
+        let cmd_dir = CommandDir::new(temp.path());
+        let result = cmd_dir.run_command("echo_cmd", "hello world").await;
+
+        assert!(result.is_ok());
+        let output = result.unwrap();
+        assert_eq!(output.as_ref(), b"hello world\n");
+    }
+
+    #[tokio::test]
+    async fn test_run_command_failure() {
+        let temp = TempDir::new().unwrap();
+        create_test_script(temp.path(), "fail_cmd", "#!/bin/bash\nexit 1");
+
+        let cmd_dir = CommandDir::new(temp.path());
+        let result = cmd_dir.run_command("fail_cmd", "input").await;
+
+        assert!(result.is_err());
+        assert!(result.unwrap_err().to_string().contains("Error running"));
+    }
+
+    #[tokio::test]
+    async fn test_run_command_not_found() {
+        let temp = TempDir::new().unwrap();
+        let cmd_dir = CommandDir::new(temp.path());
+
+        let result = cmd_dir.run_command("missing", "input").await;
+
+        assert!(result.is_err());
+    }
+
+    #[tokio::test]
+    async fn test_run_command_with_timeout_success() {
+        let temp = TempDir::new().unwrap();
+        create_test_script(temp.path(), "fast_cmd", "#!/bin/bash\necho \"$1\"");
+
+        let cmd_dir = CommandDir::new(temp.path());
+        let result = cmd_dir
+            .run_command_with_timeout("fast_cmd", "quick", Duration::from_secs(5))
+            .await;
+
+        assert!(result.is_ok());
+    }
+
+    #[tokio::test]
+    async fn test_run_command_with_timeout_expires() {
+        let temp = TempDir::new().unwrap();
+        create_test_script(temp.path(), "slow_cmd", "#!/bin/bash\nsleep 10\necho done");
+
+        let cmd_dir = CommandDir::new(temp.path());
+        let result = cmd_dir
+            .run_command_with_timeout("slow_cmd", "input", Duration::from_millis(100))
+            .await;
+
+        assert!(result.is_err());
+    }
+}

src/ipc.rs

@@ -1,26 +0,0 @@
-// Provides an IPC socket to communicate with other processes.
-
-use std::path::Path;
-
-use color_eyre::Result;
-use tokio::net::UnixListener;
-
-pub struct IPC {
-    listener: UnixListener,
-}
-
-impl IPC {
-    pub fn new(path: impl AsRef<Path>) -> Result<Self> {
-        let listener = UnixListener::bind(path)?;
-        Ok(Self { listener })
-    }
-
-    pub async fn run(&self) -> Result<()> {
-        loop {
-            match self.listener.accept().await {
-                Ok((_stream, _addr)) => {}
-                Err(e) => return Err(e.into()),
-            }
-        }
-    }
-}

src/lib.rs

@@ -9,9 +9,9 @@ use tracing::{Level, info};
 use tracing_subscriber::FmtSubscriber;
 
 pub mod chat;
+pub mod command;
 pub mod event;
 pub mod event_manager;
-pub mod ipc;
 pub mod plugin;
 pub mod qna;
 pub mod setup;

tests/command_test.rs

@@ -0,0 +1,290 @@
+use std::{
+    fs::{self, Permissions},
+    os::unix::fs::PermissionsExt,
+    path::Path,
+    time::Duration,
+};
+
+use robotnik::command::CommandDir;
+use tempfile::TempDir;
+
+/// Helper to create executable test scripts
+fn create_command(dir: &Path, name: &str, script: &str) {
+    let path = dir.join(name);
+    fs::write(&path, script).unwrap();
+    fs::set_permissions(&path, Permissions::from_mode(0o755)).unwrap();
+}
+
+/// Parse a bot message like "!weather 73135" into (command_name, argument)
+fn parse_bot_message(message: &str) -> Option<(&str, &str)> {
+    if !message.starts_with('!') {
+        return None;
+    }
+    let without_prefix = &message[1..];
+    let mut parts = without_prefix.splitn(2, ' ');
+    let command = parts.next()?;
+    let arg = parts.next().unwrap_or("");
+    Some((command, arg))
+}
+
+#[tokio::test]
+async fn test_bot_message_finds_and_runs_command() {
+    let temp = TempDir::new().unwrap();
+
+    // Create a weather command that echoes the zip code
+    create_command(
+        temp.path(),
+        "weather",
+        r#"#!/bin/bash
+echo "Weather for $1: Sunny, 72°F"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!weather 73135";
+
+    // Parse the message
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    assert_eq!(command_name, "weather");
+    assert_eq!(arg, "73135");
+
+    // Find and run the command
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_ok());
+    let bytes = result.unwrap();
+    let output = String::from_utf8_lossy(&bytes);
+    assert!(output.contains("Weather for 73135"));
+    assert!(output.contains("Sunny"));
+}
+
+#[tokio::test]
+async fn test_bot_message_command_not_found() {
+    let temp = TempDir::new().unwrap();
+    let cmd_dir = CommandDir::new(temp.path());
+
+    let message = "!nonexistent arg";
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_err());
+    assert!(result.unwrap_err().to_string().contains("Not found"));
+}
+
+#[tokio::test]
+async fn test_bot_message_with_multiple_arguments() {
+    let temp = TempDir::new().unwrap();
+
+    // Create a command that handles multiple words as a single argument
+    create_command(
+        temp.path(),
+        "echo",
+        r#"#!/bin/bash
+echo "You said: $1"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!echo hello world how are you";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    assert_eq!(command_name, "echo");
+    assert_eq!(arg, "hello world how are you");
+
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_ok());
+    let bytes = result.unwrap();
+    let output = String::from_utf8_lossy(&bytes);
+    assert!(output.contains("hello world how are you"));
+}
+
+#[tokio::test]
+async fn test_bot_message_without_argument() {
+    let temp = TempDir::new().unwrap();
+
+    create_command(
+        temp.path(),
+        "help",
+        r#"#!/bin/bash
+echo "Available commands: weather, echo, help"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!help";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    assert_eq!(command_name, "help");
+    assert_eq!(arg, "");
+
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_ok());
+    let bytes = result.unwrap();
+    let output = String::from_utf8_lossy(&bytes);
+    assert!(output.contains("Available commands"));
+}
+
+#[tokio::test]
+async fn test_bot_message_command_returns_error_exit_code() {
+    let temp = TempDir::new().unwrap();
+
+    // Create a command that fails for invalid input
+    create_command(
+        temp.path(),
+        "validate",
+        r#"#!/bin/bash
+if [ -z "$1" ]; then
+    echo "Error: Input required" >&2
+    exit 1
+fi
+echo "Valid: $1"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!validate";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_err());
+    assert!(result.unwrap_err().to_string().contains("Error running"));
+}
+
+#[tokio::test]
+async fn test_bot_message_with_timeout() {
+    let temp = TempDir::new().unwrap();
+
+    create_command(
+        temp.path(),
+        "quick",
+        r#"#!/bin/bash
+echo "Result: $1"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!quick test";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    let result = cmd_dir
+        .run_command_with_timeout(command_name, arg, Duration::from_secs(5))
+        .await;
+
+    assert!(result.is_ok());
+}
+
+#[tokio::test]
+async fn test_bot_message_command_times_out() {
+    let temp = TempDir::new().unwrap();
+
+    create_command(
+        temp.path(),
+        "slow",
+        r#"#!/bin/bash
+sleep 10
+echo "Done"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!slow arg";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    let result = cmd_dir
+        .run_command_with_timeout(command_name, arg, Duration::from_millis(100))
+        .await;
+
+    assert!(result.is_err());
+}
+
+#[tokio::test]
+async fn test_multiple_commands_in_directory() {
+    let temp = TempDir::new().unwrap();
+
+    create_command(
+        temp.path(),
+        "weather",
+        r#"#!/bin/bash
+echo "Weather: Sunny"
+"#,
+    );
+
+    create_command(
+        temp.path(),
+        "time",
+        r#"#!/bin/bash
+echo "Time: 12:00"
+"#,
+    );
+
+    create_command(
+        temp.path(),
+        "joke",
+        r#"#!/bin/bash
+echo "Why did the robot go on vacation? To recharge!"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+
+    // Test each command
+    let messages = ["!weather", "!time", "!joke"];
+    let expected = ["Sunny", "12:00", "recharge"];
+
+    for (message, expect) in messages.iter().zip(expected.iter()) {
+        let (command_name, arg) = parse_bot_message(message).unwrap();
+        let result = cmd_dir.run_command(command_name, arg).await;
+        assert!(result.is_ok());
+        let bytes = result.unwrap();
+        let output = String::from_utf8_lossy(&bytes);
+        assert!(
+            output.contains(expect),
+            "Expected '{}' in '{}'",
+            expect,
+            output
+        );
+    }
+}
+
+#[tokio::test]
+async fn test_non_bot_message_ignored() {
+    // Messages not starting with ! should be ignored
+    let messages = ["hello world", "weather 73135", "?help", "/command", ""];
+
+    for message in messages {
+        assert!(
+            parse_bot_message(message).is_none(),
+            "Should ignore: {}",
+            message
+        );
+    }
+}
+
+#[tokio::test]
+async fn test_command_output_is_bytes() {
+    let temp = TempDir::new().unwrap();
+
+    // Create a command that outputs binary-safe content
+    create_command(
+        temp.path(),
+        "binary",
+        r#"#!/bin/bash
+printf "Hello\x00World"
+"#,
+    );
+
+    let cmd_dir = CommandDir::new(temp.path());
+    let message = "!binary test";
+
+    let (command_name, arg) = parse_bot_message(message).unwrap();
+    let result = cmd_dir.run_command(command_name, arg).await;
+
+    assert!(result.is_ok());
+    let output = result.unwrap();
+    // Should preserve the null byte
+    assert_eq!(&output[..], b"Hello\x00World");
+}

tests/event_test.rs

@@ -486,7 +486,7 @@ async fn test_json_deserialization_of_received_events() {
     reader.read_line(&mut line).await.unwrap();
 
     // Should be valid JSON
-    let parsed: serde_json::Value = serde_json::from_str(&line.trim()).unwrap();
+    let parsed: serde_json::Value = serde_json::from_str(line.trim()).unwrap();
 
     assert_eq!(parsed["message"], test_message);